Road System (e.g., Elevated, Interchange) Patents (Class 404/1)
  • Patent number: 5330278
    Abstract: A method for coordinating traffic signals on a roadway network, preferably of the Multiple Loop System type. The method is also suitable for superimposing on existing grid-like systems of avenues and crossing streets. Two phase traffic-signals, red and green, of equal duration are employed at the roadway intersections. The duration of each phase of the signal cycle is determined as the estimated time for a vehicle to travel from one crossing avenue to the next adjacent crossing avenue. Where the method of signalization is employed on an MLS system, the phase duration is the "estimated time" of a vehicle to travel, first along an endless loop segment, starting at a first intersecting roadway so as to cross the next interconnecting roadways, (ta) times two, and, then, along an interconnecting roadway, from a first endless loop segment to the adjacent endless loop segment (tb).
    Type: Grant
    Filed: August 19, 1992
    Date of Patent: July 19, 1994
    Inventor: Subhash Raswant
  • Patent number: 5154533
    Abstract: A method for routing traffic along a divided highway having a plurality of crossovers between respective sides originally intended for travel in first and second directions which includes providing a first plurality of signs for traffic going in the first direction prior to at least a first crossover; providing at least a first sign at least said first crossover for traffic proceeding in the first direction; providing a second plurality of signs for traffic proceeding in the first direction after the crossover; providing the same first plurality of signs for traffic going in the second direction prior to the crossover; providing the same first sign at said first crossover for traffic proceeding in the second direction; and providing the same first plurality of signs for traffic proceeding in the second direction after the crossover.
    Type: Grant
    Filed: April 18, 1991
    Date of Patent: October 13, 1992
    Inventor: Pavel Baldea
  • Patent number: 5105494
    Abstract: The present invention relates to a road excavation and paving system having a main bridge section and ramp sections attached thereto for allowing traffic to continuously flow to and from the old highway and to and from the new highway. The old highway is reconstructed under the main bridge section. Crossovers are necessary to allow cross traffic over the old and new highways. The system has a plurality of movable pads connected by hydraulic pistons to the main bridge section for incrementally moving the system while the old road is being excavated and rebar is being laid on the new surface. After the rebar has been laid down, cement may be poured and the road finished to provide a continuous system for excavating and constructing the new highway. There is a continuous flow of traffic over the system while the old highway is being excavated and the new highway is being built.
    Type: Grant
    Filed: December 3, 1990
    Date of Patent: April 21, 1992
    Assignee: Highway Construction Bridge Systems, Inc.
    Inventor: D. Cameron Ogg
  • Patent number: 5092705
    Abstract: A system for controlling vehicles and pedestrians on intersecting one-way roadways. Vehicles on a first one-way street are only allowed, with a "go" signal to either cross the intersection and continue on the street or to turn onto the intersecting one-way street. The vehicles on the intersecting, second one-way street are stopped while vehicles on the first street are moving. During this time pedestrians are allowed to cross in front of the stopped vehicles on the second one-way street. Then, when the light changes, the vehicle traffic on the second one-way street are only allowed to turn onto the first one-way street, i.e., they are blocked from crossing the intersection and continuing onto the second one-way street. During this time, the vehicles on the first one-way street are blocked, too, from entering the intersection.
    Type: Grant
    Filed: November 13, 1990
    Date of Patent: March 3, 1992
    Inventor: Subhash Raswant
  • Patent number: 5049000
    Abstract: A continuous flow intersection for accommodating traffic from a plurality of road surfaces includes a first road surface for traffic traveling in a first direction. A second road surface is provided for traffic traveling in a direction opposite to the first direction. A third road surface is provided for traffic traveling in a direction intersecting the first and second road surfaces. A fourth road surface is provided for traffic traveling in a direction opposite to the traffic traveling on the third road surface. The first and second road surfaces intersect the third and fourth road surfaces and are disposed at a first elevation distinct relative to the third and fourth road surfaces in an area adjacent to the intersection. At least a first road surface left turn lane is disposed along the first road surface at a point displaced a predetermined distance from the intersection.
    Type: Grant
    Filed: December 23, 1987
    Date of Patent: September 17, 1991
    Inventors: Francisco D. Mier, Belisario H. Romo
  • Patent number: 5042957
    Abstract: A moving type three-dimensional road which can travel to a region where road surface repair work is to be carried out, includes a working road constituent unit associated with a traveling device and a plurality of access road constituent units associated with traveling devices. The working road constituent unit includes a horizontal floor plate disposed above and supported by a plurality of extensible/retractible support legs to form a working space thereunder. The access road constituent units are connected to the opposite ends of the working road constituent unit, and each includes an inclined floor plate disposed above and supported by a plurality of extensible/retractible support legs.
    Type: Grant
    Filed: December 18, 1989
    Date of Patent: August 27, 1991
    Assignee: Mitsubishi Jukogyo Kabushiki Kaisha
    Inventors: Masahiro Arita, Akihiko Minaki
  • Patent number: 4986692
    Abstract: An intersection of a main road and a branch road is described. A safety island is provided longitudinally parallel to the main road at the center line of the intersection. The safety island prevents cars from the branch road to cross the intersection. Circular detour roads beneath or above the main road are provided for traffic circulation. Underground passages for motorcycles and pedestrians may be provided beneath the intersection to eliminate interference with car traffic. Cars on the inner lane of the main roadway then can proceed through the intersection without interruption.
    Type: Grant
    Filed: January 10, 1990
    Date of Patent: January 22, 1991
    Inventor: Yang Yin-Lung
  • Patent number: 4955751
    Abstract: A crossroad includes two roads intersected with each other. One of the roads is level and straight, and the other road is provided with a pair of second dimensional passages, such as tunnels, subways or elevated roadways, each with a respective bypass merging into one side thereof. The entrance of each passage is provided adjacent to and a short distance from the level road. The exit of each passage is provided adjacent to the opposite side of the level road.
    Type: Grant
    Filed: August 22, 1989
    Date of Patent: September 11, 1990
    Inventor: John Tsai
  • Patent number: 4953249
    Abstract: A modular overpass that uses interlockable roadway units. These interlockable units include ramp units adapted for fitting together to create entry and exit ramps having a low end and a raised end, cantilever units for attachment to the raised ends of the ramps, and suspended span units for joining the cantilever units. Flexible footings are provided to support the roadway units. The flexible footings comprise a resilient base, a covering cap sealably fitted over the base to define a cavity, and a packable bearing material partially filling the cavity. A system of pilings are used to anchor the roadway units in position. The system can be used to create an overpass over intersections between highways and secondary roads so that highway traffic travels over the overpass and local secondary road traffic is controlled by traffic lights. The modular overpass is shaped to conform to the existing highway surface and is supported on that surface by the flexible footings.
    Type: Grant
    Filed: September 11, 1989
    Date of Patent: September 4, 1990
    Inventor: Jack A. Warwick
  • Patent number: 4927288
    Abstract: A road traffic network wherein the fundamental "building block" is an endless loop of one way traffic flow, a second endless loop of one-way traffic flow completely surrounded by the first endless loop and having traffic flow opposite in direction to the traffic flow direction of the first loop and an interconnecting traffic flow roadway extending between the two loops. The interconnecting roadway merges the traffic seeking to transfer between the two loops such that no vehicle crossovers or intersections are encountered. A road traffic network can be made from a plurality of interconnected "building blocks" or traffic flow systems, each such system being interconnected with either a single two-way roadway or two one-way roadways which, again, allow vehicle transfers between portions of the systems without crossovers or intersections.
    Type: Grant
    Filed: November 25, 1988
    Date of Patent: May 22, 1990
    Inventor: Subhash Raswant
  • Patent number: 4861184
    Abstract: A continuous flow cloverleaf type interchange for accommodating traffic from a plurality of road surfaces which includes a first road surface for traffic traveling in a first direction, a second road surface for traffic traveling in a direction opposite to the first direction, a third road surface for traffic traveling in a direction intersecting the first and second road surfaces, and a fourth road surface for traffic traveling in a direction opposite to the traffic traveling on the third road surface. The first and second road surfaces intersect and are disposed at a first elevation distinct relative to the third and fourth road surfaces in an area adjacent to an interchange. The first road surface left turn lane diverts traffic from the first road surface to cross the second road surface prior to the interchange and to continue traveling in a direction opposite to the second road surface in an area displaced laterally from the first road surface.
    Type: Grant
    Filed: December 11, 1987
    Date of Patent: August 29, 1989
    Inventor: Francisco D. Mier
  • Patent number: 4790684
    Abstract: A warning system for multi-lane roadways comprising a group of strips placed longitudinally across only the left-most lane of the roadway as referenced by a person facing in the designated direction of traffic flow.
    Type: Grant
    Filed: July 16, 1987
    Date of Patent: December 13, 1988
    Assignee: Simulators Limited, Inc.
    Inventor: Wilbur R. Adams
  • Patent number: 4698866
    Abstract: An improved construction of a movable bridge structure which comprises a plurality of segment block means consisting of at least one self-propelled block means and at least one non-propelled block means adapted to be coupled releasably with the adjacent self-propelled block means, and translating means adapted to have the non-propelled block translated onto and out of the adjacent self-propelled block means.
    Type: Grant
    Filed: May 28, 1985
    Date of Patent: October 13, 1987
    Assignee: Mitsubishi Jukogyo Kabushiki Kaisha
    Inventor: Hisashi Kano
  • Patent number: 4630961
    Abstract: In a road intersection unrestrained by traffic signal controllers the intersection is classified into a central zone and into interchange zones providing for better safety on the road and for continuous flow of traffic. All entrances and exits are placed in the interchange zones. Further, the interchange zones include overpasses for interchanging the position of lanes before they enter the central zone.
    Type: Grant
    Filed: February 29, 1984
    Date of Patent: December 23, 1986
    Inventor: Horst Hellwig
  • Patent number: 4629376
    Abstract: The invention relates to a roadway for dual-mode vehicles with a transition region from non-trackbound to trackbound traffic. On the roadway used as an entering roadway, the transverse guide bar on the driver's side, in the area of the transition region, is extended further into the area of the roadway, which can be used non-trackbound, than the oppositely located transverse guide bar, which is widened slightly funnel-like. The two transverse guide bars of the opposite roadway, which can be used for exiting, end at a mutually equal level. To create an adequately large transverse distance between the roadways in the area where the vehicles filter in, the roadway which can be used as an entering roadway runs with a slight bulge in the area of the transition region; moreover, this provides the possibility of a further adjoining roadway.
    Type: Grant
    Filed: October 15, 1984
    Date of Patent: December 16, 1986
    Assignee: Daimler-Benz Aktiengesellschaft
    Inventors: Bernhard Kluge, Herbert Mehren, Hans Sack
  • Patent number: 4592673
    Abstract: A traffic flow distribution interchange that provides non-stop and streamlined flow of freeway traffic along two crossing routes, and that occupies a relatively small amount of land area. The freeway interchange comprises a non-elevated route and an elevated crossing route which passes over the non-elevated route. Each route is substantially straight and provides traffic flow in two directions. The elevated and non-elevated routes are linked directly by four traffic flow paths along which vehicles can make right-hand turns from one route to the other. The elevated and non-elevated routes are linked indirectly by four additional traffic flow paths comprising configured ramps along which vehicles can make left-hand turns from one route to the other. These configured ramps pass under the elevated route and cross each other, providing unimpeded traffic flow.
    Type: Grant
    Filed: March 15, 1985
    Date of Patent: June 3, 1986
    Inventor: Soo-Yang Lee
  • Patent number: 4458457
    Abstract: An arch is formed of prefabricated reinforced concrete shells connected at the arch apex by an on-site cast concrete joint is built as a skewed underpass structure. In order to avoid complicated edge elements or a costly lengthening of the underpass, the individual reinforced concrete shells are formed to have their horizontal projection (in the horizontal projection of an assembled underpass) define a parallelogram which includes at least one acute angle which correspond to the acute angle formed by the intersection of the axis of the overpass traffic route with the axis of the underpass traffic route. Thus, edge elements are not necessary. An apex joint is formed of on-site cast concrete. Reinforcement rods extend into the apex joint and are arranged in an asymmetrical manner so that all elements can be designed and reinforced in the same manner with the reinforcement rods in the joint meeting directly.
    Type: Grant
    Filed: December 3, 1981
    Date of Patent: July 10, 1984
    Inventor: Werner Heierli
  • Patent number: 4272210
    Abstract: An interchange system serving elevated railways and roadways intersecting each other, which system comprises a rotary possessing of a cylindrical plaza at the center thereof and an annular bus stop compound along the periphery of the plaza, a railcar platform above the rotary, interconnecting passages between the plaza, the bus stop compound and the railcar platform and tunnel-like passages dug across under the rotary to reduce a difference between the levels of the plaza and pedestrian paths formed along the opposite sides of the roadways, thereby to ensure the safety and convenience of pedestrians.
    Type: Grant
    Filed: September 6, 1979
    Date of Patent: June 9, 1981
    Assignees: Sanae Shoji, Kunio Shoji, Michio Shoji, Shigeo Shaji
    Inventors: Sanae Shoji, Shigeo Shoji
  • Patent number: 4252482
    Abstract: A vehicle carrying railway car including a plurality of vertically spaced decks having at least one hinged deck section adapted to be raised for facilitating the loading of vehicles onto the car. The hinged deck has shrouds that are supported and aligned by inter-reactive foot elements which are constantly shielded by the shrouds preventing injury to workmen moving the deck between its respective raised and lowered positions.
    Type: Grant
    Filed: October 26, 1978
    Date of Patent: February 24, 1981
    Assignee: Pullman Incorporated
    Inventor: David G. Naves
  • Patent number: 4248557
    Abstract: An operating mechanism for a hinged deck portion of a vehicle-carrying auto-rack railway car utilizing a first-class lever to counterbalance the deck end portion. A spring load is provided by a Belleville spring pack of novel, compact construction which has a substantially constant spring-force versus deflection curve such that manual manipulation of the hinged deck by operating personnel is facilitated during loading and unloading of the auto-rack car.
    Type: Grant
    Filed: March 1, 1979
    Date of Patent: February 3, 1981
    Assignee: Pullman Incorporated
    Inventors: David J. Roldness, Thomas H. Watson, Gary D. Wonacott
  • Patent number: 4245400
    Abstract: A three dimensional toy having a base member showing a housing development with structural profile members mounted thereon which are secured by profile locking elements for constructing elevations of roadways, lots and surrounding terrain. The profile members and locking elements also serve as retaining walls for soil which, when shaped to conform to the contours of the profile members and locking elements and provided with living plants defines the topography of a living housing development.
    Type: Grant
    Filed: October 17, 1978
    Date of Patent: January 20, 1981
    Inventor: Burton R. Johnson
  • Patent number: 4181995
    Abstract: A bridging structure of modular elements to carry road or rail traffic over crossings, bodies of water and as elevated roadways to provide additional lanes over and parallel to existing roads and freeways, and to provide elevated roadways along and over canals and rivers. Mainly intended to provide quickly assembled and relative inexpensive overpasses and constant flow traffic lanes for a certain part of the traffic, leaving more space for heavier traffic at the existing ground levels, and reducing pollution and fuel consumption from idling engines.
    Type: Grant
    Filed: October 11, 1977
    Date of Patent: January 8, 1980
    Inventor: Henry C. Zur
  • Patent number: 4142468
    Abstract: An elevated dual-rail transit guideway in which the structural spanning members are shaped so as to serve also as baffles for suppressing the propagation of noise into the surroundings. The interior surface of the baffles may be treated with sound absorbing material to further improve their effectiveness.
    Type: Grant
    Filed: April 7, 1977
    Date of Patent: March 6, 1979
    Inventor: Charles Birnstiel
  • Patent number: 4129916
    Abstract: An adjustable ramp includes a ramp member supported in an adjustable suspensory frame. Adjustment of the suspensory frame changes the angle of incidence of the ramp member to the supporting surface on which the ramp is located. A resilient ramp member is provided in one embodiment which is maintained in curvilinear, flexed attitude on the supporting frame by the moveable connections of said ramp member to said suspensory frame.
    Type: Grant
    Filed: March 27, 1978
    Date of Patent: December 19, 1978
    Inventors: Todd R. Schlesinger, William L. Shaffer
  • Patent number: 4074384
    Abstract: Apparatus for the traversal of an air boat or hovercraft over river dams consisting of a two-sided ramp having an upper and lower end. The ramp is constructed in a river extending over a dam. The upper end of the ramp is located upstream of the dam and the lower end of the ramp is located downstream of the dam. Both the upper and lower ends of the ramp are at least partially submerged to permit easy access by a hovercraft. The angle of intersection of the lower end of the ramp with the water, of the upper end of the ramp with the water, and of the upper and lower ends of the ramp is made large enough so that a commercial hovercraft can traverse thereover. In one embodiment of the invention, side flanges are provided extending along the ramp to prevent an air boat once upon the ramp from passing prematurely to either side.
    Type: Grant
    Filed: August 26, 1976
    Date of Patent: February 21, 1978
    Inventor: James D. Takacs
  • Patent number: 4069765
    Abstract: To prevent longitudinal displacement of the support or catenary cable and the load carrying, tensioned cable of the suspension system, the spacers or hangers between the catenary or support cable and the carrier cable, as well as the suspension and tension of these cables, are so arranged that, in side view, the two cables touch each other at the midpoint between the pylon to provide for equalization of tension in the cables. At that position, a tension or force equalization plate is clamped to both the support cable as well as to the carrier cable, thereby preventing relative longitudinal displacement of the cables with respect to each other.
    Type: Grant
    Filed: December 4, 1975
    Date of Patent: January 24, 1978
    Inventor: Gerhard Muller
  • Patent number: 4057718
    Abstract: This invention relates to an arrangement for suspending lighting fittings and the like along or at traffic-routes and the like, comprising lines carried by standards and intended to carry or support the lighting fittings. The novelty lies in that the standards and the lines form two separate systems, wherein the line system is continuous along the traffic-route and releasably connected to the standard system so that the line system substantially remains in its elevated position even if part of the standard system is removed on e.g. a standard being struck by a vehicle.
    Type: Grant
    Filed: May 13, 1976
    Date of Patent: November 8, 1977
    Inventor: Lars David Svensson
  • Patent number: 4042308
    Abstract: There is disclosed an aerial roadway comprised of prefabricated, cantilevered deck modules; and supporting columns, interlockingly mounted on and monolithically attached to prefabricated, prestressed, post-tensioned spinal beams supported on columns; an elevated roadway comprised of prefabricated cantilevered deck modules monolithically attached to a supporting wall; and a grade-level roadway comprised of deck modules monolithically attached to a foundation located at grade level. The deck modules are provided with integral layers of porous, bituminous paving material which provide a continuous, smooth, water-permeable running surface. Vehicles are directed along the aerial elevated and ground-level roadways by guide wheels depending from the vehicles and impinging on the guide beam fixed to the deck modules. A modification of the cantilevered deck modules provides aerial, elevated and ground-level roadways for transportation systems employing relatively small, light vehicles.
    Type: Grant
    Filed: February 18, 1976
    Date of Patent: August 16, 1977
    Assignee: Westinghouse Electric Corporation
    Inventor: Mark Freedman
  • Patent number: 4004390
    Abstract: A light weight locking structure for a suspended ceiling construction of T-shaped strip grid profile bars supportively engaged by nodal plates having radiating arms in which the arms terminate in upwardly bent locking projections, and the profile bars are provided with slots in the cross-bar of the T for cooperatively receiving the locking projections of the associated arm. After engagement of the locking projections in the slots of the respective profile bar, the projections are bent over to rigidly lock the profile bars to the nodal plate.
    Type: Grant
    Filed: December 5, 1974
    Date of Patent: January 25, 1977
    Assignee: Odenwald Faserplattenwerk G.m.b.H.
    Inventor: Gunther Merkwitz
  • Patent number: 3945745
    Abstract: A street pattern is disclosed including a honeycomb pattern of traffic arteries; pedestrian passageways under the streets; unique artery dividing median means and public transit facilities between adjacent honeycomb legs.
    Type: Grant
    Filed: August 5, 1974
    Date of Patent: March 23, 1976
    Inventor: Amos I. T. Chang
  • Patent number: 3936207
    Abstract: The course to be followed by a motorist having a preselected destination is indicated by a plurality of markers set in the center of the path to be followed by the motorist, each set of markers having a different color to correspond to a different preselected destination.
    Type: Grant
    Filed: June 28, 1974
    Date of Patent: February 3, 1976
    Inventor: James A. Sticha